Fig. 1From: M2 macrophage is the predominant phenotype in airways inflammatory lesions in patients with granulomatosis with polyangiitisRepresentative figures of immunostainings of B cells (a), T cells (b), pan-macrophage marker CD68 (c), M1 macrophages (d) and M2 macrophages (e). B cells and T cells cluster in ectopic lymphoid-like structures with B cells centered and T cells in the periphery. Macrophages are found scattered throughout the inflammatory infiltrate of nasal mucosa of a patient with granulomatosis with polyangiitisBack to article page